Panel/combination instrument--combination instrument- Inspect output signal of vehicle speed.
(1) When vehicle run at 10km/h, inspect voltage between ter-
minal10 and terminal A1 of combination instrument assembly.
Standards: the voltage pulsates repeatedly between
0V to 5V for thirteen times.
Notes: Inspect the ignition switch “on” connects the
joint - Inspect speed gauge
(1) Connect a test tachometer. then startup the engine.
Notes:
z Tachometer terminals polarity connects oppositely will damage interior transistors and
LEDs.
z When move or disassemble tachometer. do not drop on the ground or knock the surface.
(2) Compare indicted value test tachometer and combination instrument tachometer.
Standard indicted value (rmp) permitted values (rpm)
700 630-770
1,000 (900-1,100)
2,000 (1,850-2,250)
3,000 2,850-3,150
4,000 (3,800-4,200)
5,000 4,750-5,250
6,000 (5,700-6,300)
7,000 6,650-7,350DC 13.5V, 25°C
(1) Disassemble the joint of fuel meter
(2) Turn ignition switch to ON, inspect indictor position of fuel guage.
Indictor position: F
(3) Connect short terminal1 and terminal2 of wiring harness sides. Turn ignition switch to ON, inspect
indictor position of fuel guage.
Indictor position: F- Inspect low fuel level indictor
- Inspect fuel gauge
The fuel gauge has the function of sensor detection (that is
failure treatment of oil level tachometer)that is when fuel gauge
indictor is at E position, if low oil level warning light doesn”t
light, first should judge whether there have open-loop trouble of
fuel sensor or wiring harness. When sensor fails, fuel indictor
should stop at current position. But if failing time is over 20
seconds, the indictor will return to E position quickly, the in-
strument will at wire break detection. If the normal situation of
detection panel is over 20 seconds, indicator will return to normal.
A1 A20336